What has radically changed in the last 230+ years with regards to the natural law that the founders fully belived in that warrants this radical chabge in the way that government respects and acknowledges traditions and beliefs of almost every human civilization? Nothing.
“What has radically changed in the last 230+ years” is an intrusive government that has been consistently enabled by whining sheep who can’t think for themselves, or pour pi-um-urine from a boot with instructions stamped on the heel.
The good sense that God gave us and the natural laws that have governed human civilization have not changed at all-they have just been ignored.